EP 3345409 B1 20211117 - METHOD FOR FRAME-WISE COMBINED DECODING AND RENDERING OF A COMPRESSED HOA SIGNAL AND APPARATUS FOR FRAME-WISE COMBINED DECODING AND RENDERING OF A COMPRESSED HOA SIGNAL
Title (en)
METHOD FOR FRAME-WISE COMBINED DECODING AND RENDERING OF A COMPRESSED HOA SIGNAL AND APPARATUS FOR FRAME-WISE COMBINED DECODING AND RENDERING OF A COMPRESSED HOA SIGNAL
Title (de)
VERFAHREN ZUR FRAME-WEISEN DECODIERUNG UND DARSTELLUNG EINES KOMPRIMIERTEN HOA-SIGNALS UND VORRICHTUNG ZUR FRAME-WEISEN KOMBINIERTEN DECODIERUNG UND DARSTELLUNG EINES KOMPRIMIERTEN HOA-SIGNALS
Title (fr)
PROCÉDÉ POUR DÉCODAGE ET RENDU COMBINÉS, EN TRAME, D'UN SIGNAL HOA COMPRESSÉ ET APPAREIL POUR DÉCODAGE ET RENDU COMBINÉS, EN TRAME, DE SIGNAL HOA COMPRESSÉ
Publication
Application
Priority
- EP 15306334 A 20150831
- EP 2016054317 W 20160301
Abstract (en)
[origin: WO2017036609A1] Higher Order Ambisonics (HOA) signals can be compressed by decomposition into a predominant sound component and a residual ambient component. The compressed representation comprises pre-dominant sound signals, coefficient sequences of the ambient component and side information. For efficiently combining HOA decompression and HOA rendering to obtain loudspeaker signals, combined rendering and decoding of the compressed HOA signal comprises perceptually decoding the perceptually coded portion and decoding the side information, without reconstructing HOA coefficient sequences. For reconstructing components of a first type, fading of coefficient sequences is not required, while for components of a second type fading is required. For each second type component, different linear operations are determined: one for coefficient sequences that in a current frame require no fading,one for those that require fading-in, and one for those that require fading-out. From the perceptually decoded signals of each second type component, faded-in and faded-out versions are generated, to which the respective linear operations are applied.
IPC 8 full level
H04S 3/02 (2006.01)
CPC (source: EP US)
G10L 19/008 (2013.01 - US); H04S 3/008 (2013.01 - US); H04S 3/02 (2013.01 - EP US); H04S 2420/11 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2017036609 A1 20170309; CN 107925837 A 20180417; CN 107925837 B 20200922; EP 3345409 A1 20180711; EP 3345409 B1 20211117; HK 1247016 A1 20180914; US 10257632 B2 20190409; US 2018234784 A1 20180816
DOCDB simple family (application)
EP 2016054317 W 20160301; CN 201680050113 A 20160301; EP 16710402 A 20160301; HK 18106515 A 20180518; US 201615751255 A 20160301